phelps



jeets-Sheet 1.

(N0 Mod RAILWAY TELEGRAPHVYI.

Patented Jan. 4 1887.

I N VE N TOR gv7%/%J A TTORIVE Y GRQSS REFERENCE WITNESSES I (No Mod eh) H m "A L.J. PHELPS.

' RAILWAY TELEGRAPHY.

No. 355,470. Patented Jan. 4, 1887.

3 Sheets-Sheet 2.

I glvijm.

WITNESSES (No Model.) 3 Sheets-Sheet 3.

L. J.. PHELPS.

RAILWAY TELEG'RAPHK I I No. 355,470. Patented Jan. 4, 1887.

P -j 0 INVENTOR A TTORINEY WITNESSES:

UNITED STATES PATENT Orrrcs,

LUGIUS .r. racers, or NEW YORK, iv: vignssien oa-rornn RAILWAY TELEGRAPH COMPANY.

RAILWAY T LEGR'ARHYJ SPECIFICATION forming part of Letters Patent'No. 355.470. dated January 4, 1887.

' Application filed Jnly3,1886. Eerie-1N0. 297,00 (to model.)

To all whom it may. concemr ,7). Be it known that I, LUQIUS J. PHELPS, a

' citizen of l the United States, and a resident of New York,in the county of-New York and State of New York, have invented certain new and useful Improvements in Railway Telegraphy, of which the following is a specification.

The object of 'myinvention is-to provide-a means for maintaining telegraphic communi .cation with a moving vehicle-such, for instance, as a railway-car -whether"in motion orv at rest, over the same telegraph-line on which are located stations provided with ordinary telegraph apparatus of any kind--such,for in- 1 "vibration-signals are employed the dots and stance, as Morse telegraph apparatus-without interference with or from the simultaneous use of the line for the purpose of telegraphing by the Morse or-similarapparatu's.

In carrying out myinvention I propose to use suitable means fortelegraphingto the train by what I sometimes term vibration -'signals-that is to say, signals whose elementary portions consist of a series of electrical pulsations, vibrationsor undulations coming, pref erab1y,with a rapidity suificient to produce the sensation of a musical tone.

In a system of Morse telegraphy in which dashes may be represented, respectively, by musical sounds of a duration corresponding to the length of the dots and dashes.

My present invention has reference more especially to asystem in which the telegraphing to the train may be carried on by vibrationsignals without interfering with the use of the line simultaneously for the purpose of teleraphing by ordinary Morseor other apparatus connected directly into the telegraphic circuit. a

Among other thing's,my-inveution relates to a means for setting up the electrical vibrations on the telegraph-circuit,from which they are inductively transferred to the vehicle by means of devices-such, for instance, as those described in my prior Patents Nos. 312,506 and 33-i,187to be reador received on said vehicle on an ordinary telephone-receiver orother instrument responsive to such vibrations.

In the present instance I have shown myin-.

vention ascarried out by means of a conductortion.

mounted upon a vehicle inpar'allelism to the fMorse telegraph circuj't'or line, and connected on the vehiclew-ith the receiving; and trans-- mitting a'pparatus. Ido not,'however, limit myself to'such special devices, since the same results may be effected by'the employment of ---any-aerangemeut that will give an inductive :counection betweenthe vehicle and the line;

without actual contact.

[My invention consists in the combination,

with an ele'ctro-magnet having connectionstothe circuit, of a vibrator or commutator where by the coils of said magnet may be intermittently included in circuit with'a suitable source of electricity and a telegraph-ftrausmitter; all 7 combined so-that th'e extra-or secondary currents developedin the coil of the magnet when the circuit'through said. coils and the generator is broken by the vibratormay be controlled. by the key, and may act as the electrical pulsations. or-vibr'ations by which vibration-signals are transmitted. Y

My invention-consists, further, in the c0mbination, with the telegraph-line having Morse apparatus thereon orother suitable telegraph apparatus shunted by condensers, of an elec-- tro-magnet whose coils are connected to the lines rheotome or vibrator in a branch around i said magnet, a generator of electricity whose current is caused to flow intermittently in the coils by means of the rheotome or vibrator, and a key or transmitter for controlling the flow to line of the extra or secondarycurrents set up 'by the interruption of the circuit of the generator through the coils.

My invention consists,also,in certaindetails and combinations of apparatus, that will be described in connection with the aceompanyingdrawings. and then more specifically recited-in the claims.

Figure 1 is a diagram of apparatus arranged and combined in accordauce with my inven- Fig. 2 illustrates tire. application of the invention to a wire where it is desired to use only'a portion of the same for train telegraphing. Fig.3 illustrates a modification in the arrangement of the key, telephone-receiver, and electro-magnet, the extra currents from which are employed as the electric vibrations.

for telegrapn'ing to the train. Fig. 4 illustrates .a form of rheotome or vibratorthat may be used in place of that shown in the other figures. Fig. 5 illustrates a modification.

. Referring to Fig. 1, L indicates a telegraphline, including two or more stations, A B D, At the stations B D are located telegraph with the rheotome m vibrator, as indicated,

sothat when the .key is closed the" shunt is.

completed. and the vibrator willthemhave circuit-through the coils and generators Whenthe key is closed,the rheotome vibrates" in the line-circuit and normally shunted'by condensers C, which serve to preserve the.cir-' the contact against which the rheotoine rests unit for vibration-signals when the line-circuit when out of action, and being thrown intheis interrupted by the operation of the trans, opposite direction byzitsspring when by mitters'at said stations. ,.In the present ,case Ihave shown the stations as provided "with ordinary Morse telegraph apparatus, consist-- ingot relays R and Morse keys K. j The hairr tery which charges the line-wire L during cornthrough the magnet, which will continue as circuit. of the magnet is completed through them-attraction of the: magnet 'thmagne'ts' circuit is hroken..- It-will 'thn's beseen that" the rapid 'bratio'ns of the. rheot'ome will" produce rapid breaks and makes of circuit munication between stations by the.eniploy- -long as-the keyis closed, and will resultinment of the Morse telegraph apparatus isilndi; throwingupon. the line a series of "extra cur- Gated at M B.-

i'enis from the magnet, each-.oneof said series A railway car-or vehicle (indicated at E) is ..passing the line -on theinterrnption 'of the 10 0 provided with a conductor carried parallel to cal circuit at. the vibrator-contact. By this thetelegraph-line L, and in suitable indudti've 'ineans, and by the operation of the key,Morse proximity thereto, as described in my prior, signals-may. be sent, each character of the -Patent, No. 312,506, before referred to. LOn Morse signal; being represented bya series of the vehicle is located suitable ap'paratu for vibrations-of greater orless duration,-acco rd-' receiving vibration-signals transmitted om" .alstation, A, over the line .and inductiyely v 7 Similar apparatus work, because its circuit through the magnet is. g :95

transferred to thevehi'cl'e.

ing to the time that'the key remains depressed. -Whenthe key is open,. the 1 vibrator cannot open. Any other' formof'rheotonie or vibrator adapted to rapidly interrupt the flow of ierred inductively to the line, and composed, known -form-illnstrat ed in Fig. 4.

essentially, of a generator of electricity, L'.B,;1 a vibrator, V, consisting'of an electro-magnet from the vehicleima'y consist of. an ordinary whosearmature and coils are included in the telephone, T, placed in a-b'ran'oh toearth from circuit of the generator, and a transmit-tenor. the back. contact of the key K, which branch 4 key, K, which controls the passage of the in also includes a condenser, G, whose'function current of ,the generator through the' coils or: shown a simple formvof" device for-setting up ,A might beqeir ployed- -as, for instance, *a" vibration-signals on thecar-ciircuihto betrans.--- clocbworkfi'heotome of the ordinary well- The"receirer for vibration-signals coining terrupted currents of the generator overthe isto' prevent the battery arfrom being shortcar-circuit. The vibration'si'gnalsare received .on the car by meansof an ordinary speaking telephoneqreceiver, T, ,or other instrument which is sensitive or? responsive tot-he else circuitedto ground; I y

Inor'der to prevent'the charge and dischar e of the condenser G'lfi om affecting" the teetrical vibrations sent from thestation- 'ii and inthe form of' springff, which, when the 4 5 inductively transferred to the vehicle. Other 'keyuis depressed,-f makes connection with a devices mightbegused' in place .of 7 those de-j' stop,'b,- connected to the same poleof the cons'cribed .wfthoutde'parting' from the" invention.

The station A contains the vibration signal apparatus.

denser with thetelephone.

In the position of the-devices shown in Fig. .-1, which is supposed to be their normal posi- 0 In the circuit of the line L isshowu an elec tion, the line L iscomplete through the appatro-magnet, M, consisting of'a bundle of fine 'ratus at the stations B and; D, and messages iron wirewound with acontinuous coil of 0O3lBB'W1'l0 "The current from the generator of electricity a, consisting of apgalvanic-bat. tery or other device, canbe made toflowlnmaybe sent a'nd'receiv'ed over the line by the employment-of such apparatus in the ordinary ways The condensers G serve the function of "also preventing the otherwise sudden changes termittently through the coils of-the'mag netby of 'tension'which would take place 'on the cirmcans of a-yibrator'orrheotome consisting in the present instance of the armature-lever H for the electro-magnet' that when against its back stop completes a shunt or branch circuit through which the current of the generator may flow. When the armature. is drawn up by the flow of current, the shunt or branch is interrupted, and the extra. current of the coils flows over the line. For the purpose of controlling Tthe flow of such extra current, the

: transmitting-key K may be placed in the shunt -.cuit from the opening and closing of the keys K by acting as gradnators to cause the current to gradually rise and fall from its maximum to its minimum tension. By this means the reduced.

cates with the operator at station A by using his key, so as to establish vibration-currents on the vehicle-circuit, which, being induct ph0ne,'-I.,make the back contactot' the key K disturbing eflects upon the telephone-receivers at station A and upon the vehicle are greatly The operator upon the vehicle E communi e the key K.-

nals find circuit through the condenser U, and. K at the Morse telegraph-sta- 5 in case the keys tions are open, are inductively transferred from one section of line to the other by means of condenser G. hen the keyKis depressed, the branch from line containing the telephone and condenser is disconnected, and at the same time a local circuit is formed,.iucluding the coils of the electro-magnet'M, the generator 0, the contacts of the vibrator, and the front stop of the key. So long as the key-remains depressed this circuit is rapidly made and interrnpted, and at every interruption the extra cuirient from the coils of the electro-magnet flows over the line-circnit, thus giving the vibratory or pulsatory current, which, being inductively transferred to the vehicle, produces vibration-signals inthe telephone-receiver thereon.

In Fig. 2 I have'illustrated an arrangement that maybe employed where it is desiredto' use a portion only of theline as,-for instance, the section 2 for vibrationsignals-andto cut otf the section 3 from any effects .of such vibration-signals. In this instance the generator a is not in the line-connection controlled" by The coils of electro-magnet M are placed in the line-circuit, as indicated; but on the side of'said coils remote from section 2 a branch. to earthis made through a large condenser, G, which serves to out Oh the pulsa tions or vibrations originating in the electromagnet from the section ofline 3. The telephone receiver T at station A, for the v'ibra- "the key to earth,

be seen, however,

him,

' when the key is on its back contact.

tion-signaling apparatus, is connected, as in Fig. 1, in a branch from the back contact of including: a condenser, G. The apparatus is used in all respects in the same way as the apparatus in Fig. 1. It will that in this arrangement when the flow of current of the generator through the coils is interrupted such generator is not in the circuit over which the extra or secondary current from-the coils flows.

In't he arrangement of devices shown in Figs. 1 and 2 it will be seen that there: is an opportunity for the electrical vibrations coming over the line to pass in part toearth, avoiding the telephone'receiver T when the key is against its back stop. This diificulty can be avoided by the employment of suit-able switches when the operator at station A is receiving a message, but when he is transmitting a message and the operator on the vehicle desires to break the telephone will not be affected to its fullest extent by the electrical vibrations induced on the line from the vehicle, inasmuch as a part may escape to earth through the coils a and the condenser the same function as the condenser CinFig. 1.

By the arrangement of devices shown in Fig. 3 I avoid this defect, and force all the vibration-currents to pass through the telephone This I do by the employment of a continuity-preserv 0, which in-this case has elcctromagnet.

to make connection depressed, stop, o, -.is made,

circuit through the telephone, while the other,

when the key is depressed, completes the owcuit through the coils of the extra-current These contacts are so arranged that circuit through either shall be made before contact at the other is broken. In

the depressed position of the key the circuit of a local generator through the coils of the magnet and the rheotome is inade,while at the same time the circuit for the line directly through the coils of the electromagnet is preserved.

' The key K is of any suitable mechanical construction,and is arranged so as when depressed with a spring. or lever, m, connected to line and normallyresting against a stop connected to a branch containing the telephone-receiver 'T.

The key K is connected thronghrthegcoils of M with a continuation of the line. \Vhenthe key is in the position shown, plete through the telephone '1; but when the key is depressed the lineis completed throughthe coils of the eleetro-magnet at the same time or the instant before the branch containing the the line is com-' telephone is broken. When .the key is fully connection of the lever m with a which stop-connects-with the branch-or shunt circuit,iucluding the generator a and the contacts of the vibrator, so that circuit is completed through the coils of M and the key K for the vibrator and generator. 7 the latter position of the key it will be observed that the circujtfor the line is still intact through the coils of M, so that at every interruption of the circuit of the generator through said coils, produced by therheotome orvibrator, the extra current of the coils will flow over the line. Other forms of continuitypreserving keys might be-used for the same. purpose. j

It is not necessary that the coils of the electro-magnet M should be in the direct line-circuit. Its coils may have inductive connection with theline-as, for instance, by a condenser,- C, Fig. 5, which serves to transfer the extracurrent vibrations of the magnet-to the line in obvious manner.

What I claim as my invention is- 1. The combination, with the electro-magnet M, of ageuerator of electricity'and 2. vi.- brator or rheotome for producing rapid interruptions of the flow of current of the generator through the coils, a transmitting-key, and direct connections from the coils of the magnet to a telegraph-circuit, so that the coils shall be in the direct telegraph-circuit, as and for the purpose described.

2. The combination, in a vibration-signal", apparatus, of an electro-magnet having its coils connected in the direct circuit of the line or portion of lineon which electrical vibrations are to beproduced, a branch circuit around said coils, including a vibrator or rheo' tone for producing rapid interruptions ofcurthe purpose described. I 4; The combination, with atelegraph-line. L, having two or more stations provided with of the line and shuntediby condensers, of .an

rectly in the line-circuit, and a vibrator or rheotome for'c'om-pleting a branch aroundsaid magnet, through which a current from a suitable generator may circulate intermittenllyin a path including the coils.

5. The combinatiomwith aMorse telegraph line, having Morse-apparatus shunted by con-.

densers,. of a vehicle provided with means whereby-signals may he received and transmitted byinduction to and from the line, and

provided with an electro-magnetiwhosecoils are connected directly to line, avibrator or rheotome controllingth'e circuit of a generator mitting-key.

6. The combination, with the line-circuit L, of an electro-magnet in the direct circuit of the line, a rheotome or vibrator, and a key for completing the circuit of a generator of electricity through the coils, said circuit including the rheotome, the contacts of the key, and a branch of the main circuit around the 001 s. a

y 7. The combination of a telegraph -line stretched parallel to thepath of a vehicle, in duction apparatus whereby vibration signals on the line may be inductively transferred to a circuit or connection on--the vehicle, a tele- 1 phone for receiving the wvibration-signals, and 45 at a station connected with the line-circuit an electro-magnet in the direct line-circuit, and

the same, and atrausmitting-key, as-and for.

telegraph apparatusconnected into the circuit electro-magnet having its coils included dia station connected to the line-circuit. and.

ofelectricit-y through the co i1s,-and a t ransa vibrator or rheotom'e for intermittently com-- pleting the circuit of a generator of electricity through the coils of said electromagnet, whereby electrical pulsations or vibrations may be produced through the extra or secondary currents developed in said coils.'

8-. The combination, with the transmittingwhereby the charge and discharge of the con. derisermay be prevented from passing through the telephone;v I

9. ,The combination, with the continuitypreserving key, of an alternating current sonrceconsisting of a magnet in a connection from one stop:of saidkey. in conibination with a vibratorzfor causingpulsations of a batterycurrent-in the magnet-coils, and a telephonein a OQDQGGlJlODfIO'H I the normal 101' back stop of said'key, as andfor the purpose described.

- 10. Thecombination, with the line-L, of a transmitter controlling three branches of the line, one containing a. telephone-receiver, the other thecoils of an electro-magnet, and the third a generator and contacts of a rheotome or, vibrator, as and for the "purpose-described.

11. 'The combination, with a Morse. tele-.

graph-line having its Morse'a'pparzitus shunted by condensers, of a vehicle carrying transmitting and receiving apparatus operating to transmit and receiyesignalsbyinductivetransfer to and from the line, antelectro-magnet having coils connected to the line, a vibrator or rheotome controlling the flow of current of a generator of electricity through the coils,

and a key for controlling the secondary or extra currents produced by the action of the vibrator.

key K and the telephone and condenser in'a branch fromthe back contact thereof, of a supplemental connection from the same pole of a .l'condenser' to which the telephone'is connected,-

Signed at New York, in the county of New Yorkand State of New York, this 2d day of July, A. D. 1886.

WM. H. Caren, WM. H BYGA DINER. 

